File:Cone into an Inverse System.svg

%Note: Add the -shell-escape flag to the compilation command to compile directly to an image. 
%For .pdf files, use \documentclass[preview]{standalone}
%For .png files, (see http://tex.stackexchange.com/q/11866 for more info) use: \documentclass[convert={density=300,size=1080x800,outext=.png}]{standalone}
%For .svg files you need pdf2svg installed (see https://tex.stackexchange.com/a/51766/187911 for more info) use:
\documentclass[convert={outext=.svg,command=\unexpanded{pdf2svg \infile\space\outfile}},multi=false]{standalone}
\usepackage{tikz}
\usetikzlibrary{matrix,arrows,decorations.pathmorphing}
\usepackage[all]{xy}
\begin{document}
\begin{tikzpicture}[scale=1.2]
\node (Z)  at (0,2) {$Z$};
\node (MI) at (-1, 0) {$M_i$};
\node (MJ) at (1, 0) {$M_j$};
\path[->,font=\scriptsize,>=angle 90]
(Z)  edge node[left]{\scalebox{1.5}{$h_i$}} (MI)
(Z)  edge node[right]{\scalebox{1.5}{$h_j$}} (MJ)
(MJ) edge node[above]{\scalebox{1.5}{$\mu_{ij}$} }(MI);
\end{tikzpicture}
\end{document}